#include <iostream>
using namespace std;
 
struct A {
  A()         { log("construct"); }
  A(A const&) { log("copy-construct"); }
  A(A&&) noexcept { log("move-construct"); }
 
  A& operator=(A const&) noexcept { log("copy-assign"); return *this; }
  A& operator=(A&&)      noexcept { log("move-assign"); return *this; }
 
  static void log(char const * msg) {
    std::cout << msg << "\n";
  }
};
 
int main() {
  A x, y;
  x = std::move_if_noexcept(y);
 
  return 0;
}

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